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Downy Mildew In Vineyards, Diana Fisher, Andrew Taylor, Colin Gordon, Peter Magarey

Bulletins 4000 -

Downy mildew, caused by Plasmopara viticola, is a major fungal disease of grapevines that originates from North America. This disease was first detected in a commercial Western Australian vineyard in October 1998 and has since been found in most grape growing areas within the State. It is found in all other grape growing areas of Australia.

Plasmopara viticola is specific to grapevines (e.g. Vitis vinifera), although not all Vitis spp. are susceptible. The American rootstock species and hybrids are less susceptible or are resistant (refer to ‘Varietal susceptibility’). Other species of downy mildew, such as those found on …